Welcome to the ASIC and SoC Insider. This is inside the interview series. In this session, we talk about debugging, a failing UVM test and how to show depth in interviews. When an interviewer asks how you debug a failing UVM test, you’re not just asking about debugging, they’re checking your systematic approach to problem solving.
For context, debugging is one of the most valuable skills and verification the way you explain your process demonstrates not only technical ability, but also leadership mindset under pressure. The types of questions you’ll face are: how do you debug a failing UVM test? An example of the answer could be my first step is to reproduce the issue to confirm it’s consistent.
Once confirmed, I isolate whether the failure is stimulus related, DUT related or test bench related. I check the logs, waveforms 📍 and scoreboard messages for discrepancies.
For example, in a DDR5 controller project, a constrained random test began failing only at high data rates. I validated the sequence constraints, then dug into the monitor and found a subtle misalignment in timing checks. By breaking the problem down step by step, I avoided wasted cycles and guided the team forward toward a fix quickly.
The key is not just fixing the bug, but showing how you narrow the scope, logically communicate your findings and get to the root cause effectively, structure your debugging, answer like a flow, step by step with the real world example to prove you can lead under pressure. If you want more interview coaching with real world verification examples, reach out.
I’ve helped candidates move from engineer to architect with the right prep, and I’ve done this across the US, UK, and Europe.
This is the ASIC and SoC Insider. Let’s get started.
